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根据绳牵引并联机构的优点,建造了一种新型的用于低速风洞试验的飞机模型绳牵引并联支撑系统,研究该系统中模型的空气动力参数的测量与计算方法。文中对机构进行了静力学分析,建立了描述实验模型气动载荷的数学模型,提出了通过测量绳系拉力求得模型空气动力参数的解算方法;设计并构建了绳系拉力测量及数据采集系统;将该系统置于开口式回流低速风洞中进行了吹风试验,采集了模型在不同姿态和不同风速下的各牵引绳的拉力数据,并对数据进行了处理分析,通过解算得到了不同吹风条件下模型的气动载荷参数曲线。研究结果表明,绳牵引并联机构用于低速风洞试验的支撑系统是可行的。
According to the advantages of rope-pulling parallel mechanism, a new type of aircraft towed parallel support system for low-speed wind tunnel test was constructed and the method of measuring and calculating the aerodynamic parameters of the model was studied. In this paper, the mechanism is analyzed statically, the mathematical model describing the aerodynamic load of the experimental model is established, and the solution of the aerodynamic parameters of the model is obtained by measuring the tension of the rope system. The rope tension measurement and data acquisition system The system was placed in open low-speed wind tunnel back to the wind blowing test, the model collected in different attitude and different wind speed of the traction rope tension data and data processing analysis, obtained by the different hair Under the condition of model aerodynamic load parameter curve. The results show that the rope traction parallel mechanism for low-speed wind tunnel test support system is feasible.